Horseshoe-nail machine



(No Model.)

0. ROBERTS.

nonsrzsnor: NAIL MACHINE.

Patented Nov. 2, 1886.

n PETERS. FholoLithugnphar; Wahingum n. c,

(Inv

UNITED STATES PATENT OFFICE.

OLIVER ROBERTS, OF BELLEVILLE, ILLINOIS.

HORSESHOE-NAIL MACHINE.

SPECIFICATION forming part of Letters Patent No. 352,069,' dated November 2,1886.

Application filed December 26, L884. Serial No. 151,107. (No model.)

To all whom it may concerrn Beit known that I, OLIVER ROBERTS, of

Belleville, in the county of St. Clair and State of Illinois, have invented a certain new anduseful Improvement in .Horseshoe-Nail Machines, of -which the following is a full, clear, and exact description, reference being had to the accompanying drawings, forming part of this specification.

The invention is confined to the cutting and holding devices whichare made to fit in an ordinary nail-machine, the machine being constructed to give sufficient movement to the moving knife and the header, for the purposes hereinafter to be described.

Figure 1 is a perspective view showing the toolsin their relative positions previous to cutting a blank from a nail-plate, the moving knife being in .its upper position and the moving die and header in their retracted position. Fig. 2 is a vertical section at-2 2, Fig. 5, showing a side view of the blank. Fig. 3 is avertical section at 3 3, Fig. 6, showing a side view of the slug. Fig. dis a side view showing the slug held by the jaws after the head has been formed by the header. Fig. 5is a horizontal section at 55, Fig. 2, showing an edge view of the blank. Fig. 6 is a horizontal section at 6 6, Fig. 3, showing an edge view of the slug. Fig. 7 is an end view of the header. Fig. 8 is a perspective view "of the end of the moving die. Fig. 9 isatop view of the bed-knife. Fig. 10 is a horizontal section of the moving knife, looking downward, and showing the curved edge of the same.

A is the bed-work, composed of the beddie B, the back piece, 0, and the bed-knife D. The

shanks of these tools have the usual form, and they are clamped in the machine in the usual manner.

E is the moving knife, whose cutting-edge e has the same curved form as the cutting-edge d of the bed-knife. The form of these edges is such as to cut the blank (the nail-platebeing turned, as usual, between the cuts) with a chisel-point and with a fish-tail head, the metal which is cutfrom the point going into the head. The blank and slug are shown at F, the head being marked f and the point f. i

G is the moving die. Thisis made with aledge or lip, g, at the lower part of its face, the upper the moving die G, asat g*.

side, y, of the said ledge or lip bearingagainstf the lower edge, f, of the slug, and the face 9*.

bearing against the side of the slug which is at top when the same is cut from the nail-plate. The end or face of the bed-die has much the same form, having a lip, b, whose lower side, I), bearsagainst the upper edge of the slug when it is gripped between the jaws, and the face b bearing against that side which is be neath when out. I

It will be understood that the blank is turned one-fourth around, so as to rest edge up be tween. the dies when the heading is done. This may be accomplished by the following or any other desired or preferred mechanism: 1 is a stop and guide-fingenand 2 is a chisel-pointed turner, both of which are located at the side of the moving die G and opposite the end of the back piece, 0, as represented in the perspective View, Fig. 1. In operation the blank is pushed forward along the bed-knife until its end reaches the stop and guide-finger 1. The moving knife E then descends, cuts off the slug, and continues to move downward, carrying with it the slug and stop and guide-finger.

The end of the turner 2 projects beyond thev face of the stop and guide-finger only far enough to engage beneath. the slug; hence when said slug comes in contact with said turner the movement of its side contiguous thereto will be momentarily arrested, thereby causing the blank to turn one-fourth around and drop upon the lip g edge up. The turning-of the slug is facilitated by beveling off the upper corner of The faces of the dies have the necessary bevels at b and g and the ledges or lips at b and g to impart therequired form to the head of the slug when spread by the header H. The head or end of the header has a rounded recess, h, giving the proper elongated bulging form to the head of the blank when finishing the slug.

Ordinarily. the finished nails drop from the dies as soon as they separate; but for the purpose of rendering this certain- I provide a clearer, which is represented by the letter I.

on the lip y when the die G is retracted, its (the nails) protruding head will come in con tact with the fixed clearer I, and thereby be dislodged.

I prefer to make the edges of the dies convex or rounding in proximity to the header, so as to avoid the danger of the header coming in contact with the dies when swaging up the head.

The operation isas follows: The parts being in position shown in Fig. 1, the nail-plate is inserted between the knives, and the blank being out off is carried down with the moving knife and turned edge pp, as described. The moving die then moves forward and clamps it in this position. (See Figs. 2, 4, and 5.) Then the header impinges on the head and spreads it out to the bevels g and (See Figs. 3 and 6.) As the parts move to the position shown in Fig. 1, the s1ug is discharged. The nailplate having been inverted and put in position, another blank is out off.

OLIVER ROBERTS.

Witnesses:

SAML. KNIGHT, G120. H. KNIGHT. 

